/**
 * Copyright 2011 Mathieu Magnaudet
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package edu.enac.fileloader.util;

/**
 * Interface defining methods for the observer pattern. 
 * @author mathieu
 *
 */
public interface Observable {
	/**
	 * Adds an observer
	 * @param o The observer to add
	 */
	public void addObserver(Observer o);
	
	/**
	 * Deletes an observer
	 * @param o The observer to delete
	 */
	public void deleteObserver(Observer o);
	
	/**
	 * Deletes all the observers
	 */
	public void deleteObservers();
	
}
